Combined muffler, vaporizer, and mixing-chamber for gas-engines



P. J. GARRISON. 'COMBINED MUFFLER VAPORIZER, AND MIXING CHAMBER FOB s s-enemas.

' APPLICATION FILED MAR. 20, 1919.

1,349,755, Patented Aug. 17,1920.

UNITED STATES PATENT OFFICE.

PERRY J. GARRISON, OF OXFORD, MICHIGAN, ASSIGNOR OF ONE'HALF TO WILLIAM REED, OF OXFORD, MICHIGAN.

COMBINED MUFFLER, VAPORIZER, AND MIXING-CHAMBER FOR GAS-ENGINES.

Specification of Letters Patent.

Application filed. March 20, 1919. Serial No. 283,809.

To all whom it may concern:

Be it known that I, PERRY J. GAnnIsoN, citizen of the United States, residing at 0:1 ford, county of Oakland, State of Michigan, have invented a certain new and useful l mprovement in Combined Mull-leis, Vaporizers, and Mixing-Chambers for Gas-Engines, and declare tlie following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the aceonipanying drawings, which form a part of this specification.

h'ly invention relates to a combined mufiler, vaporizer and mixing chamber for gas engines, shown in the accompanying drawings and more particularly pointed out in the following specification and claim.

One object of the present invention is to provide a device simple in its construction and operation, which is especially adapted for lowgrade fuels, in which the heat from the exhaust gases of the engine are utilized to vaporize liquid fuel conducted through coils surrounding the wall of the mufiler portion of the devicey'the coils being inclosed by a jacket through which air is drawn by the suction stroke of the engine the gas, and air,-heated in its passage through the acltet being delivered together into a mining chamber where they cominingle before entering the intake manifold of the engine (not shown).

Another feature of the invention consists in providing a pair of coils surrounding the wall of the muffler portion through which gasolene and a lower grade of hydro-carbon fuel are respectively and successively introduced into the mixing chamber,-gasolene being employed upon initially starting the engine, to be subsequently followed by the lower grade fuel after the engine has had an opportunity to warm up.

\With the foregoing and other objects in view which will appear the description proceeds, the invention resides in the combination and arr= igernent of parts and in the details of construction hereinafter described ainl claimed, it being understood that changes may be made in the precise embodiment of the invention herein disclosed without departing from the spirit of the same.

In the drawin s accompanying this specification Figure 1 is an end elevation of the device.

Fig. 2 is a side elevation of the device with one portion of the outer jacket removed (on line 2-2 of Fig. 1) to show the coils housed within the jacket ad'acent to the wall of the muflier portion of the device.

Fig. is a longitudinal sectional view on line 3-3 of Fig. 1, showing parts in elevation.

Fig. i is a cross'sectional view on line l-l of Fig. 2. f

Referring now to the letters of reference placed upon the drawings v A, denotes a pipe leading from the exhaust manifold of a gas engine (not shown). B, indi .ates an enlarged chamber into which the exhaust gases pass, and U, designates an exhaust pipe extending into the chamber B, closed at its inner end and provided with a plurality of small apertures D, through which the exhaust gases pass to the open air. E, is a divided jacket surrounding the chamber B, the parts being secured together by a plurality of bolts F, engaging the flanges E, of the respective parts.

(I? and H, indicate pipe coils for respectively conducting a high and a low grade hydromarbon fuel adjacent to the wall of the chamber B, that the heat from the exhaust gases may vaporize the fuel before its discharge in gasilied condition into the mixing chamber or pipe 1, leading to the inlet manifold (not shown) of an engine.

J, is an air valve, located at one end of the jacket E, adapted to be opened by the suction stroke of the engine against the action of the spring K,-the air being drawn through the chamber formed by the jacket E, where it is warmed prior to its entry into the mixing chamber 1, to commingle with the gas delivered thereto. L, is a thumb-nut screwed upon the stem of the valve for regulating the tension of the spring K, whereby the volume of air admitted may be controlled.

l'laviug now indicated the several. parts of the device by reference letters, its construction and operation will be readily understood.

Immediately following the warming up of the engine through its operation by the initial admission of gasolenc from a suitable suppiy tank (under control of a valve not shown.) the delivery of gasolene is cut off, and a lower grade of fuel is admitted to the coil through a valve not shown) conduced with the trolling its delivery from a fuel tank. The low-grade fuel is then vaporized in its passage through the coil, by the heat from the exhaust gases of the engine passing through the mufiler portion of the device,whereupon the gas and air, drawn into the jacket through the suction stroke of the engine,

are delivered into the mixing chamber where they commingle, as previously explained, prior to their delivery as a combustible mixture to'the intake manifold of the engine. It Will be evident that by the use of this invention that greater eficiency in gas formation Will result from the heat of the muflier and that a greater volume of air may be introgas,increasing the mileage with the same amount of fuel.

Having thus described my inventionpvhat I claim is A carbureting device for internal combustion engines having an exhaust pipe leading therefrom comprising a chamber of but slightly greater diameter than said exhaust havlng openings in the ends which fit the exterior of said chamber, a mixing chamber extending into the air heating means and into which the fuel tubes open, and means for admitting air to the air heating means.

In testimony whereof, I sign this specification in the presence of two witnesses.

PERRY J. GARRISON.

\Vitnesses Lnwrs A. I'IADDRILL 7 D. ROBINSON. 

